If you haven’t already, I would suggest getting the TriField Electromagnetic Field Meter to assess how much radiation you’re being exposed to. With the towers being 5 miles away, it might not be as bad as you think, at least in relation

It might be worth while to spend some time in a remote area that doesn’t have any cell phone service and has a minimal amount of other types of radiation. This could help you realize how the radiation is affecting you and if it’s really causing your tachycardia. If it turns out that you feel a lot better, it could serve as a baseline to help you determine how effective your efforts to block radiation in your home are.

I think the number of reception bars on your cell phone is a good general measure, but I think a meter would be better, especially since your phone will only indicate the signal strength for your particular provider.

If one has the resources, this sounds like a great idea to eliminate as much radiation from the bedroom as possible. Even if the research on the influence of electromagnetic radiation on sleep isn’t fully conclusive, I think the importance of undisrupted sleep can’t be overstated and justifies such precautions. However, for the many people who will undoubtedly consider this to be excessive, eliminating the obvious sources of radiation such as cell phones, computers, and other unnecessary electronics is a simple precaution that’s much better than doing nothing at all.

There really is only one way to completely block electromagnetic fields from a space, and that is to turn the space into a Faraday cage. There are a number of ways to turn a room into a Faraday cage. All involve coating or replacing the surfaces (walls, ceiling, floor, and doors/windows) with conductive material, so the resulting closed surface is complete, connected, and grounded. For practical purposes, an approximation to a Faraday cage works well.

The walls and ceiling can be painted using a conductive paint, or covered with metallic-foil wall paper, or any other conductive material. During construction, metal bug-screen can be installed behind the drywall. Whatever you use for the conductive material, it must be electrically connected at the edges and grounded.

Doors and windows must be considered, also. Windows can be covered with metal screens, or metallic films. Doors can be made of metal, or covered with the same materials as walls. For most residential applications, the little holes for wires and plumbing don’t matter. For some specialized applications, they must also be closed.

If you succeed, radios and cell phones will not work inside the room when the doors are closed. Then, to eliminate EMF from the room, all you have to do is close the doors and refrain from generating EMF inside the room. Leave the cell phone and computer in another room at night.

There’s no doubt that ultrasound and magnetic resonance imaging are incredible diagnostic technologies that are immensely valuable. However, that’s not to say that there’s no risk associated with using them.

Ultrasound imaging uses sound waves that are technically not a part of the electromagnetic spectrum, but are still considered to be a form of radiation that can have a potentially negative biological effect.¹ For this reason, the FDA has advised against using ultrasound for “keepsake” fetal pictures.^2,3 In fact, the use of ultrasound has even been evaluated as a potential risk factor (although mild) for pregnant women in your profession.⁴

Magnetic resonance imaging not only produces electromagnetic radiation but relies on it as the very basis for how it works. Based on this, MRI testing does indeed present a potential risk of undesirable biological effects.⁵

Both technologies appear to be relatively safe, but this isn’t to say that there’s no risk involved. The point is to not use them unnecessarily or without caution.

1. Andreassi MG, Venneri L, Picano E. “Cardiac imaging: The biological effects of diagnostic cardiac ultrasound.” Progress in Biophysics and Molecular Biology. 2007. 93:399-410.

2. Rados C. “FDA Cautions Against Ultrasound ‘Keepsake’ Images.” 2004.

3. FDA. “Avoid Fetal “Keepsake” Images, Heartbeat Monitors. 2008.

4. Lerman Y, Jacubovich R, Manfred SG. “Pregnancy Outcome Following Exposure to Shortwaves Among Female Physiotherapists in Isreal.” American Journal of Industrial Medicine. 2001. 39:499-504.

5. Formica D, Silvestri S. “Biological effects of exposure to magnetic resonance imaging: an overview.” BioMedical Engineering OnLine. 2004. 3:11.

Matt, Physiotherapist

I set the laptop on a table and put the TriField meter directly in front of it. Without any applications running, the magnetic field continually fluctuated between 0 and 4 milligauss. After opening a web browser, the magnetic field would fluctuate between 7 and 10 milligauss for a few seconds and then return to the 0 to 4 range. I went through this sequence for each crystal and neither had any noticeable effect. During each test, the crystal was placed directly on the laptop just below the keyboard.

Perhaps there are benefits to using these crystals that aren’t detectable with the meter, but based on these results, I wouldn’t expect them to make much of a difference.

I spend a lot of time in front of computers. To minimize my exposure, I keep the monitor and CPU as far away from me as possible. As you can tell from the situation I described with my old monitor, different models and brands of equipment vary in the amount of radiation that they produce which is why it’s important to get a meter and test. In my case, it made a tremendous difference.

Based on what I’ve read, crystals and other products that claim to protect you from electromagnetic radiation only provide a minimal reduction and are not nearly as effective as minimizing or eliminating the source. Based on that, they might be good in situations where you’ve already reduced and eliminated as much as you can. I’m actually curious about such products and may order a few just to test them out.

Unfortunately, if you use computer all day long, it’s almost impossible to escape from them. But I heard that some crystals like black tourmaline can help to reduce electromagnetic radiation. It’s a rather cheap stone but I’ve never tested it. If you do get a chance to test it with your measurement device, do let us know. Thanks!